| commit | 274193224cdabd687d804a26e0150bb20f2dd52c | [log] [tgz] |
|---|---|---|
| author | Shaohua Li <shaohua.li@intel.com> | Fri Dec 16 14:00:31 2011 +0100 |
| committer | Jens Axboe <axboe@kernel.dk> | Fri Dec 16 14:00:31 2011 +0100 |
| tree | f07a788183f2ac91b9b16295f8f146bd5b88fb96 | |
| parent | 4a0b75c7d02c2bd46ed227d4ba5941ba8a0aba5d [diff] |
block: recursive merge requests In my workload, thread 1 accesses a, a+2, ..., thread 2 accesses a+1, a+3,.... When the requests are flushed to queue, a and a+1 are merged to (a, a+1), a+2 and a+3 too to (a+2, a+3), but (a, a+1) and (a+2, a+3) aren't merged. With recursive merge below, the workload throughput gets improved 20% and context switch drops 60%. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>